Philips 434894 - 16.5T8/48-5000 IF LED Straight Tube Light Bulb for Replacing Fluorescents Lumens: 2150 5000K with 40,000 hour lifetime Optimized performance with Instant Start Ballasts, Compatible with select Program Start Ballasts Turns on instantly with no flicker or buzz Glass-free & mercury-free allowing for safe conditions and non-hazardous waste disposal